If Youtube videos do not play reload the page, that's a Youtube bug.
Or maybe now, a few years later, it's a new bug ;-)

Chinese Man feat. Ex-I, Lush One, Plex Rock - Get Up

Kalki - Varanasi

Françoise Hardy - Ma jeunesse fout le camp (Dim Dam Dom 1968)

Sound of Ceres - Humaniora

Tessa Dixson - Prayer